iOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6+, released on 2017-11-09T18:10:00Z. The update package is 1.55 GB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 259b2eae8ac340b6e8987e6c9755611222b3ea08.zip.